Overview
Squidex is an open-source headless CMS written in .NET that uses MongoDB as its storage backend and implements CQRS with event sourcing for a full audit history. It provides a schema editor, REST and GraphQL APIs, asset management, role-based access control, and multi-language content. A cloud-hosted version is available. Deploy via Docker Compose with MongoDB.
Where it falls short of Contentful
- MongoDB dependency increases operational complexity vs. SQL-based headless CMSes
- .NET stack means fewer hosting providers with native support compared to Node/PHP tools
- UI and developer experience are less polished than Contentful or Sanity
- Plugin/extension ecosystem is minimal; most customization requires code changes
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
Tags
Claim this listing to keep it accurate, add a deploy template, or feature it on relevant pages.
Embed the Squidex difficulty badge in your README — it links back here.
[](https://openreplace.com/squidex)Similar open-source projects
Other self-hostable tools in the same space worth comparing.
Leading open-source headless CMS with flexible API and content type builder
Modern open-source publishing platform for blogs and newsletters
Developer-first headless CMS and application framework built with TypeScript
World's most widely used open-source CMS and blogging engine